Bosch Smart System · Control unit · Warning
Bosch Smart System error code 153002
The control unit is too hot, so its LEDs are dimmed heavily
What you can check
Let the bike cool down for about 10 minutes out of direct sun.
You can usually fix this yourself
Trolda reads live data from Bosch Smart System bikes. What Trolda shows on your bike
Same part: Control unit
Sources
- Bosch eBike Help Center – én side per feilkode (2026-10-04)
Explained in Trolda's own words from the manufacturer's public documentation. Trolda is not affiliated with the manufacturer. If in doubt, ask your dealer.
Trolda for your e-bike
Trolda connects to your Bosch Smart System bike and shows what you did, what the motor did, and what it cost the battery.
Get TroldaTrolda is in open testing on iPhone and Android. You get the app through our tester page, it takes a minute.